The Spanish Civil Guard dealt a major blow to an organized money-laundering ring with connections to two Russian crime syndicates on Tuesday. The operation, two years in the making, was named “Usura” and was supported by Europol.

The National Court of Spain issued arrest warrants for several Russian citizens, including top officials allegedly close to President Vladimir Putin’s circle and linked to the Russian organized crime in Spain.

Five directors of the Spanish branch of the Industrial and Commercial Bank of China (ICBC) have been arrested as part of a probe into alleged money laundering of more than € 40 million (US$ 44 million), according to a Feb. 17 news release from Europol.

Spanish police working with the European Union police agency (Europol) report that they have dismantled a massive transnational money laundering network which has laundered more than US$ 337 million in the past six years, mostly in countries in southern Europe.